Interchangeable curved type and plate.



No. 811,776. PATEH'I'ED FEB. 6 1906' H. L. KOBHLBR.

INTBBGHAHGBABLE GURVBD TYPE AND PLATE. wrun -x10! rmzn nu. ma,

mvwron WITNESSES:

m'osusr UNITED STATES PATENT OFFICE.

INTERCHANGEABLE CURVE!) TYPE AND PLATE- Specification of Letters Patent.

Patented Feb. 6, 1906.

Application filed March 23,1905- Serial No, 251,027.

To all whom it may concern:

Be it known that I, HENRY L. KOEHLER, a

' citizen of the United States, and a resident of Deer Park, in the county of Jefferson and State of Kentucky, have invented a new and useful Improvement in Interchan sable Curved Type and Plates, of which the ollowin is a specification.

y invention relates to a device by which detachable plates arranged to hold type may be secured on the outer surface of a revoluble cylinder and by which curved type may be added or removed separately on the surface of said plate in such manner that the face of said plate-type and of said type shall form part of the surface of a perfect o linder.

I have on October 19, 1904, ed m application, Serial No. 229,065, which is sti l pending, for a patent on adjustable curved type inder.

resting directly on the cylinder.

My resent objects I attain by the contrivance i lustrated in the accompanying drawin s, in which"- igure 1 is a perspective of the entire con trivance. 2 is a view of the strip below described. }g. 3 is a section throu h the strip, late-ty e, and part of the cylin er below escribe Fig. 4 is a section of the groove and mortise.

A is a revoluble rigid cylinder encircled by grooves B B, which widen inward, forming mortises.

D D are ctri s or guard-bars having loosely attached to t cm the dovetails E. These dovetails fit loosely into the mortises.

F F are countersunk screws which ass through the stri s and the dovetails by w 'ch said stri s may be firmly fastened to the cyls is done by turning the screws until they meet resistance from the cylinder. The dovetails are thus forced upward against the sides of the mortises and are firmly held, and the strips are thus firmly secured in position on the cylinder. At one place on the cylinder (indicated by G G) the grooves extend at the circumference to the full width of themortises, thus permitting the entrance of the dovetails into the mortises, after which the strips may slide freely around the cylinder, except w en scrwcd fast.

H is a cylindrical '-curved plate which may have considerab e arc and ma have a length egual to the entire breadth o the c 1- inder. that; at its two sides-that is, at t e extremes of its arcbeveled edges I I, which fit snugly between the cylinder and the'overof the bevels on t encircled by mortisesi hanging bevels P I on the strips. On the outer surface of this late there maybe fixed raised letters. On 1; 1e outer surface of this plalte are also mortised or beveled grooves L is a typo, made, preferably,.of metal, having a raised letter or other figure u on its face, both type and figure bein curve circu larly from top to bottom of t e face of the type. Its inner face curves similarly with t e plate against which it fits, and its upper and lower ed es are beveled from top outward as at M These type are adapted to he slid within the grooves on the plate and are retained in position by these bevels. To prevent their sliding out of the grooves,- I use the end piece N and the screw 0, which operate in the mortise in the same manner as the dovetails and screw above mentioned. The faces of the type when inserted into these mortises are elevated to exactly the same height above the c linder as are the fixed typf on the plates, i there be any y contrivance operates as allows: The dovetails on the strips are first inserted into the mortises so that the strips may be freely slid around on the cylinder. I place a platetype between two strips, its beveled ed es bein held firml against the cylinder by t e have ed edges 0 the strips, which are screwed fast thereto. It may be prevented from sliding out in Various convenient ways, such as b wedging slivers of metal between its beve ed edges and the bevels of thestrigas. When I desire to emplo movable type on t e late in art or altoget er, they are arranged in the esired order by sliding them into mortises in the plate, and they are secured from sli out, preferably by means of an end piece and screw 0.

In describing my contrivance I have spoken e strips and at the sides of lates as means for holding the the type p plate in position, and similarly I have spoken of the beveled type fitting into the mortises.

However, it won d be feasible to secure the plates to the cylinder and the t e upon the plate by means of flanges, as indi ated in my application for patent on adjustable curved itt v at I claim as m invention, and desire to secure by Letters atent, is- 7 I. The combination of a revoluble c linder beveled strips a dovetails fitting loose y in the mortises, an a beveled curved plate having on its outer sllt'rncv, nmrtisvs, and hvvvled curvvd typo thvrcin, and means for fastening the ships to ID and scruws' and mu! pmws Mung thou-1n, and the cylinder, all substantially as described.

llltmls l'ur l'usl vning NH 51 rips to the cylindmj Signvd at Louisville, Kentucky, this 18th all sllhshultinll) am dosm'ilmdp (lay of l\l.arch, 1905.

2. Th0 uumhinut-ion01' a ruvolilblec lindc'r (21101112101! by nml'tlrws, bvvvlvd strlps lavmg HEN RY L. KOEHLER dnvvtnils fitting lnusoly in the murt-ises, a \Vitnusses: buvvlml (:urwd Platfl lmvmg on lts outer sur- A. LINCOLN DEMBITZ,

Fax-4*, morlisvs, lwvulod uurvvd type fitting GEORGE A. BRENT. 

